Brake mechanism for looms.



PATENTED MAY 9, 1905. E. H. RYON.

BRAKE MECHANISM FOR LOOMS.

APPLIOATION FILED MAR 9. 1904.

3 SHEETS-SHEET 1.

6% v ZQVA 49 PATENTED MAY 9, 1905.

E. H. RYON. BRAKE MECHANISM FOR LOOMS.

APPLICATION FILED MAR.9.1904.

3 SHEETS-SHEET 2.

PATENTED MAY 9, 1905.

E. H. RYON. BRAKE MECHANISM FOR LOOMS.

UNITED STATES Patented May 9, 1905.

PATENT OFFICE.

EPPA H. RYON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, OF WVORCESTER, MAS- SACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 789,388, dated May 9, 1905.

Application filed March 9, 190 1. Serial No. 197,231.

To all whom. 71/. vita/y concern.-

Be it known that I, EPPA H. RYON, a citizen of the United States, residing at \Vorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Brake Mechanism for Looms, of which the following is a specification.

My invention relates to a brake mechanism for a loom, and more particularly to an improved construction of the brake mechanism ordinarily used to brake or stop the crankshaft on the movement of the brake-lever on the stopping of the loom.

The object of my invention is to provide an improved brake mechanism of simple construction and effective in operation; and my invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a side View of a portion of a loom-frame with my improvements applied thereto. Fig. 2 corresponds to Fig. 1, but shows some of the parts of the mechanism in their opposite position; and Fig. 3 is, on an enlarged scale, a perspective View of the brake-lever and shipper-lever and some of the other parts shown in Fig. 1.

In the accompanying drawings, 1 is the loom-frame.

2 is the crank-shaft, journaled in bearings 3 on the frame 1. Fast on the crank-shaft is the brake-wheel 1, shown by broken lines. The friction-band 5 for the brake-wheel A is pivoted at one end on a stud 6 on the loomframe 1 and is bent around the wheel 1, as shown, and attached to a rod 7 which has a threaded end 7, which extends loosely through a boss 8 on a lever 8, which is pivoted on a stub 9 on the frame 1. On the threaded end 7' of the rod 7 are two nuts 9 to hold the rod 7 in the boss 8 and allow of the adjustment of said rod.

A spring 10 is attached at one end to the frame 1 and at its other end to the lever 8. The spring 10 acts to hold the band 5 in its inoperative position, as shown in Fig. 1, when the loom is in operation; but on the backward movement of the brake-lever, to be hereinafter described, on the stopping of the loom the spring 10 acts to draw the band 5 down on the wheel 4. and apply the friction.

On the upper end of the lever 8 is a boss 8, through which extends loosely the threaded end 11 of a connector or rod 11. A nut 11" on the threaded end 11 of the rod 11 holds the end 11 in the boss 8 and allows of the longitudinal adjustment of the rod 11. The other end of the rod 11 is pivotally attached to an arm 12 on the hub 12 of the brakelever 12. The hub 12 is loosely mounted on a stud 13 on the loom-frame 1.

The brake-lever 12 extends up above the breast-beam 14:, as is customary, and extending out from the lever 12 is an arm 12, carrying a pin 16, on which is pivotally mounted a pawl 17, one end, 17, of which extends under and is engaged by a pin 18 on a projection 19 on the shipper-lever 19, mounted on the stud 13. Thus the end 17 of the pawl 17 is held out of engagement with the knock-oil lever 20 when the loom is turned over by hand, and the brake will not be applied should the dagger come in contact with the knock-01f lever 20 at such a time. The other end, 17", of the pawl 17 is heavier than the end 17 and is adapted in its lowered position to be engaged by the knock-off lever 20 when the shipper-lever is in'its forward position and the loom is in operation. A pin 20 on the brake-lever 12 limits the upward motion of the end 17" of the pawl 17. (See Fig. 2.)

On the brake-lever 12 is an extension 21, the end 21' of which is in this instance adapt ed to engage the loom-frame (see Fig. 3) and limit the forward motion of the lever 12. The end 21 of the extension 21 is adapted to engage a projection 19 on the shipper-lever 19.

The brake-lever 12 is held in its normal position by the spring 10 through the pivotpoint of the connector-rod 11 to the arm 12 on the lever 12 being above the dead-center, as shown in Fig. 1. The pivotal point between the rod 11 and the arm 12 on the brakelever 12 is so located that by a slight movement thereof the spring 10 of the brake mechanism is enabled to release or to apply the brake-band 5 on the brake-wheel 4.

On the upper side of the breast-beam is shown the filling stop-motion lever 22. (See Fig. 3.)

WVhen the loom is to be started, the shipper-lever 19 is moved or drawn forward in the usual way. The movement of the pin 18 on the lever 19 with said lever allows the end 17 of the pawl 17 to drop into the path of the knock-off lever 20. In case it is desired to stop the loom suddenly the inward movement of the brake-lever 12 in the direction of the arrow 6, Fig. 3, will, through the engagement of the projection 21 on said lever with the projection 19 on the shipper-lever 19, move said lever 19 and stop the loom and through connections from the brakelever simultaneously apply the brake-band 5 to the brake-wheel 4. The automatic movement of the knock-off lever 20, engaging the end 17" of the pawl17, carried on the brake-lever 12, will move said lever 12 and the shipper-lever 19 and stop the loom and operate the brake mechanism.

The shipper-lever 19 can be operated inclependently of the brake-lever 12 to stop the loom if it isdesired to turn the loom by hand; but the brake-lever 12 cannot be operated to stop the loom without operating the shipperlever.

In case the brake-lever 12 is in its rear position, as shown in Fig. 2 of the drawings, and the friction-band 5 applying friction on the brake-wheel i, the forward movement of the shipper-lever 19' to start the loom will, through the engagementof the projection 19 thereon with the end 21 of the arm 21 on the brake-fever 12, move forward the brakelever 12 and release the friction of the band 5 on the brake-wheel 4.

It will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a brake mechanism of a loom, a brake- Wheel, a friction-band therefor connected with a pivoted lever, and said pivoted lever, a spring connected therewith, a connection from said lever to a brake-lever, and said brakelever carrying a pawl to engage the knock-off lever, and said knock-off lever and said brakelever having a projection to engage the shipper-lever, and said shipper-lever carrying a pin to engage said pawl, the operation of the brake-lever to apply the brake causing the operation of the shipper-lever to stop the loom, substantially as shown and described.

2. In abrake mechanism of a loom, the combination with a brake-Wheel, a friction-band therefor, intermediate connections between said friction-band and a brake-lever, and said brake-lever carrying a pawl to be engaged by the knock-01f lever, and said knock-off lever, of the shipper-lever, adapted to be engaged by the brake-lever, and to be operated to stop the loom on the operation of the brake-lever and through intermediate connections to operate the friction-band to apply friction to the brake-wheel, substantially as shown and described.

3. In a brake mechanism, abrake-lever pivotally supported, an arm on said lever, a friction device pivotally connected with said arm, a spring connected with said friction device, and acting to hold the pivotal point of said connection and said arm substantially in line with the pivot-support of said arm, to hold the friction device in its inoperative position, and on the backward movement of said brakelever said spring acting to apply the friction, substantially as shown and described.

EPPA H. RYON.

WVitnesses:

J. C. DEWEY, M. HAAS. 

